Water pump refacing tool



Nov. 25, 1947.

w. B. CHI LES WATER PUMP REFACING TOOL Filed May 14, 1946 Patented Nov. 25, 1947 UNITED STATES Parana carries-E -WA-TER PUMP REFACING T0011 William -B.- Ghiles,rLublio ck, iTex.

' Application 'May14, 1946,Sei'ial N'o.'-"669710 Z-Ciaims. .1

This invention relates to grinding tools and more particularly to grinding tools employed for resurfacing water pump iacings, as for example those used in connection with internal combustion engines, including those for automobiles, stationary power plants, small boats and the like.

Heretofore when the facings on water pumps of the type ordinarily used with the cooling system of an internal combustion engine have become worn until the seal leaks, it has been the usual practice to replace the entire water pump unit because of the difliculty of properly resurfacing the worn facings.

It is an object of the invention to provide a tool for quickly, economically, and accurately grinding and reshaping the facings of water pumps and the like, in order that leakage may be prevented.

Briefly stated, the invention includes mechanism for renewing or refacing the bearing surfaces of water pumps to obtain tight joints for preventing leakage during operation of the same.

The invention includes a pilot guide adapted to seat in the pump housing and form a fixed support for a pilot rod, on which a refacing tool is adapted to be rotatably mounted so that it may be driven from a conventional power drill chuck.

Further objects and advantages of the invention will be apparent from the following description taken in conjunction with the accompanying drawings, wherein:

Fig. 1 is a transverse section of a water pump with the tool of the present invention shown in operative position;

Fig. 2 is a perspective of the chuck or rotatable element of the tool with the attached grind stone;

Fig. 3 is a cross section thereof;

Fig. 4 is a perspective of the pilot or guide rod; and

Fig. 5 is a perspective of the (stationary) pilot guide with a portion broken away for purposes of illustration.

Referring to the drawings, the water pump A may be of conventional character, as for example that generally used in connection with the cooling system of internal combustion engines. In Fig. 1 the impeller of the pump has been removed and the refacing tool operatively attached by functional engagement therewith.

The tool comprises a chuck Iil consisting of a cylindrical portion ll having an unthreaded extension l2 of reduced diameter at one end and a threaded extension l3 of reduced diameter on the other end. The extension I2 is adapted to fit into the chuck of a standard power drill, not shown, to obtain the necessary power for rotative operation of-the chuck w. The-cylindrical portion of the chuck and the threaded extension are provided with an axial bore M which terminates near the end of the cylindrical portion.

A grind stone I5 is mounted on the threaded extension l3 of the chuck and in order that such stone may be replaced or renewed it is provided with a threaded insert Hi, the threads of which engage the threads of the extension [3. It is apparent that the stone may thus be easily replaced when necessary because of wear or to substitute a stone having a diflferent abrasive quality, of a different size, or some other desired characteristic.

The bore i i of the chuck l l is adapted to receive a substantial length of the upper portion of a pilot rod ll having a disk shaped member or shoulder I 8 integral therewith and a lower portion adapted to pass through a pilot guide l9 in the central bore 25! of which it is received. The pilot guide I9 is fixed relative to the rod 20 by means of a wing nut 2! engaging the threaded portion H of the pilot rod ll with the shoulder IS in contact with the opposite face of the pilot guide I9.

The pilot guide is may be of a diameter corresponding to that best suited to fit snugly into the sleeve 22 of the water pump A, which will usually vary in size with the size of the pump. Afiixing the pilot guide and rod in place will thus provide the upstanding length of rod I! for chuck II and attached stone I5 to revolve about and maintain the same in axial alignment with the impeller shaft support in order that the pump facing 23 may be accurately refaced by contact with the grind stone [5.

Thus the invention provides a means for positioning a grinding element relative to a pump of the general type shown in order that power of a suitable variety may be applied to a portion of the means for operation thereof to affect a desirable result on the pump.

It is understood that this invention is not restricted to the type of pump illustrated. The unit illustrated is of a commercial type and may be of any other commercial type employing rotating impellers to generate centrifugal force which is utilized for the compression of fluids and for transmitting them against resistance.

While we have illustrated one particular form of the invention, it is obvious that changes and adaptations may be made thereto within the scope of the following claims without departing from the spirit, purpose and intent of the invention.

What is claimed is:

1. A tool grinding mechanism for re-surfacing pump seal surfaces comprising an elongated pilot rod threaded at one end and provided with an integral washer substantially midway or its length, a cylindrical pilot rod receiving pump bearing engaging guide on the threaded end of said pilot rod clamped between said washer and said threaded end, a freely rotatable cylindrical chuck slidably and rotatably received on the opposite end of said pilot rod threaded at one end and provided with chuck receiving extension of reduced diameter at its opposite end, and a grind stone having a work engaging surface perpendicular to the axis of said pilot rod threaded onto the screw threaded end of said chuck.

2. A tool grinding mechanism for re-surfacing pump seal surfaces comprising an elongated pilot rod threaded at one end and provided with an integral washer substantially midway of its length, a. cylindrical pilot rod receiving pump WILLIAM B. CHEES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,682,314 Walton Aug. 28, 1928 1,760,493 Hall May 27, 1930 1,975,904 Ramey et a1 Oct. 9, 1934 2,150,621 Hall Mar. 14, 1939 

